Combine + Unwrap
Merge dozens of tiny sub-meshes with no UVs into one atlas, then paint it as one object.
VIDEO ON THE WAY
Final video is on the way, thank you for your patience!
Combine + Unwrap... in the Mesh Tools window is built for models that arrive as many small meshes with no UVs at all. It merges every renderer mesh into one buffer, runs a single shared atlas, saves one OBJ, and loads it back ready to paint.
It only needs a loaded model, no existing paint or input UVs, so it works straight after import.
